91667616 has 24 divisors (see below), whose sum is σ = 240627744. Its totient is φ = 30555840.

The previous prime is 91667599. The next prime is 91667663. The reversal of 91667616 is 61676619.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477340 + ... + 477531.

It is an arithmetic number, because the mean of its divisors is an integer number (10026156).

Almost surely, 2^91667616 is an apocalyptic number.

91667616 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

91667616 is an abundant number, since it is smaller than the sum of its proper divisors (148960128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91667616 is a wasteful number, since it uses less digits than its factorization.

91667616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954884 (or 954876 counting only the distinct ones).

The product of its digits is 81648, while the sum is 42.

The square root of 91667616 is about 9574.3206547514. The cubic root of 91667616 is about 450.8914280203.

The spelling of 91667616 in words is "ninety-one million, six hundred sixty-seven thousand, six hundred sixteen".